Oyster spat is washed from the Robert Lee, a vessel of the Oyster Recovery Partnership, and onto restored oyster reef in Harris Creek, a tributary of the Choptank River in Talbot County, Md., on Sept. 1, 2015. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Staff and volunteers from the Anacostia Watershed Society harvest seeds from the wetland plant arrow arum on the Anacostia River in Bladensburg, Md., on Sept. 22, 2018. The seed pods were brought to nearby Bostwick House for processing, and will be grown in area classrooms as part of the nonprofit's Rice Rangers program. (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)

Capt. Tyrone Meredith harvests oysters with a hand tong near Broad Creek, a tributary of the Choptank River in Talbot County, Md., on Feb. 20, 2018. Meredith finds his summer charter fishing business to be more fruitful, and remembers catching many more oysters 30 years ago. &quot;You could catch 75 bushels by nine o’clock in the morning,&quot; Meredith said. &quot;What we usually have is probably eight or 10 bushels now.” (Photo by Will Parson/Chesapeake Bay Program). (Download on Flickr)